chore: decommission AdGuard Home (dead since 2026-05-17, LAN uses router DNS)

Container, data, compose dir, and Prometheus probe removed from .192.
Ports 53 and 3000 freed.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

compose/hf-pdocker-01/adguard/docker-compose.yml

@@ -1,26 +0,0 @@
-services:
-  adguardhome:
-    image: adguard/adguardhome:latest
-    container_name: adguardhome
-    restart: unless-stopped
-    volumes:
-      - /mnt/docker-data/configs/adguardhome/work:/opt/adguardhome/work
-      - /mnt/docker-data/configs/adguardhome/conf:/opt/adguardhome/conf
-    ports:
-      - "53:53/tcp"
-      - "53:53/udp"
-      - "3000:3000/tcp"
-      - "853:853/tcp"
-    mem_limit: 256M
-    memswap_limit: 256M
-    healthcheck:
-      test: ["CMD-SHELL", "wget -q --spider http://localhost:3000/ || exit 1"]
-      interval: 30s
-      timeout: 10s
-      retries: 3
-      start_period: 30s
-    logging:
-      driver: "json-file"
-      options:
-        max-size: "50m"
-        max-file: "3"